US2606885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified dicyandiamide resins and processes of preparing the same
Assignee: Wyeth Holdings LLC
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Filing: 1950-02-17
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Granted: 1952-08-12
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Expires: 1970-02-17
Abstract
No abstract record available.
Inventors
- 👤 Alfred F Schmutzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:08
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C09D11/103; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/10; C08G12/14; C08G12/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A WATER INSOLUBLE POLYMERIZABLE GLYCOLATED DICYANDIAMIDE-FORMALDEHYDE RESIN WHEREIN THE MOL RATIOS OF GLYCOL, DICYANDIAMIDE AND FORMALDEHYDE VARIES BETWEEN ABOUT 1:1:1 AND 6:1:3, RESPECTIVELY PREPARED BY HEAT REACTING THE COMPONENTS UNDER AKALINE CONDITIONS WHEREIN SAID GLYCOL IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, DIETHYLENE GLYCOL, DIPROPYLENE GLYCOL, BUTYLENE GLYCOL, BUTANEDIOL, GLYCEROL AND GLYCEROL MONOETHERS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |